that man has been identified as 50-year-old paul war recollection partif of arlington, virginia. after partis received some bad news about his mother, that's what set him off, here is what happened next. this is how it went down. >> mr. davis was receiving some news about the care and the condition of his mother. just outside the doorway to that room when he became emotionally distraught. during the course of the conversation with the doctor mr. davis removed a small semiautomatic handgun from his waist area, waistband area, and fired a single gunshot that struck the doctor in the lower chest/upper abdomen. >> reporter: now police say right after that shooting the from was rushed down to the emergency room, he was immediately taken into surgery, they say his wounds are serious but he should survive. davis, on the other hand, he went back into his mother's room, barricaded himself in. swat cruz, s.w.a.t. teams from baltimore county and city surround add couple floors on the eighth floor of the nelson building out here at hopkins campus, and what they did then was once they were ab